More reliable author sitemaps and Korean URLs

Author pages are included in blog sitemaps again, and posts with Korean or other non-Latin URLs refresh correctly after changes.

Two publishing paths now keep search engines and readers in sync more reliably.

Published author pages are included in each blog's sitemap again, helping crawlers discover author archives.
When a post uses a Korean or another non-Latin slug, publishing or changing its URL now refreshes the correct page instead of leaving an older cached result.

No settings changes are required. These updates apply automatically to published blogs.